package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.AddEmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }


    /**
     * 添加员工
     * @param addEmployeeDTO
     * @return
     */
    @Override
    public void addEmployee(AddEmployeeDTO addEmployeeDTO) {
        Employee employee = new Employee();

        // 对象属性拷贝
        BeanUtils.copyProperties(addEmployeeDTO,employee);

        // 设置账号状态，默认正常状态 1表示正常状态，0表示锁定，定义常量类维护
        employee.setStatus(StatusConstant.ENABLE);

        // 设置密码（默认密码定义常量类维护）
        //employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes(StandardCharsets.UTF_8)));
        employee.setPassword(PasswordConstant.DEFAULT_PASSWORD);

//        // 设置创建时间和修改时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        // 设置当前记录创建着的ID和修改者的id
//        // 通过ThreadLocal获取共享的ID
//        Long currentId = BaseContext.getCurrentId();
//        employee.setCreateUser(currentId);
//        employee.setUpdateUser(currentId);

        employeeMapper.insert(employee);
    }


    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult selectEmployeePageQuery(EmployeePageQueryDTO employeePageQueryDTO) {

        // 设置默认页码色显示的条数
        if(employeePageQueryDTO.getPage() == 0){
            employeePageQueryDTO.setPage(1);
        }

        if(employeePageQueryDTO.getPageSize() == 0){
            employeePageQueryDTO.setPageSize(10);
        }

        // 开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        // 分页查询的基础上添加姓名的模糊查询
        Page<Employee> page = employeeMapper.selectPage(employeePageQueryDTO);
        // 获取page中的数据转换为PageResult结果
        long total = page.getTotal();       // 获取中的记录数
        List<Employee> result = page.getResult();   // 获取查询到的结果
        return new PageResult(total,result);
    }


    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void employeeStatusOrStop(Integer status, Long id) {
        // 启用禁用员工账号为修改数据操作，直接将其封装为对象，调用统一修改的mapper接口
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);
        employeeMapper.unifyUpdateData(employee);
    }


    /**
     * 根据ID查询员工信息
     * @param id
     * @return
     */
    @Override
    public Employee selectEmployeeById(Long id) {
        Employee employee = employeeMapper.selectEmployeeById(id);
        // 将查询出来的员工信息中的密码进行***显示
        employee.setPassword("******");
        return employee;
    }


    /**
     * 编辑员工信息
     * @param addEmployeeDTO
     */
    @Override
    public void updateEmployee(AddEmployeeDTO addEmployeeDTO) {
        Employee employee = new Employee();

        // 对象属性拷贝
        BeanUtils.copyProperties(addEmployeeDTO,employee);

//        // 设置更新时间
//        employee.setUpdateTime(LocalDateTime.now());
//
//        // 设置员工的修改人的ID
//        // 通过ThreadLocal获取共享的ID
//        Long currentId = BaseContext.getCurrentId();
//        employee.setUpdateUser(currentId);
        employeeMapper.unifyUpdateData(employee);
    }


}
